Fixes the slug issue (issue #17) during layer import.
Fixes the error (issue #23) when uploading a layer.
Excludes uploaded and extracted layer files in commit.
Adds a navigation bar with Home and Layers Tab. Fixes issue #18.
Merge branch 'master' of https://github.com/ingenieroariel/webandgis

Conflicts:
	layers/models.py
	webandgis/templates/_account_bar.html
Merge branch 'master' of https://github.com/ingenieroariel/webandgis

Conflicts:
	layers/models.py
Merge branch 'master' of https://github.com/ingenieroariel/webandgis
Cleans some lined following the 80 ruler line.
Merge branch 'master' of https://github.com/ingenieroariel/webandgis
Merge branch 'master' of https://github.com/ingenieroariel/webandgis
Updates the README.me file.
Fixes a typo error in README.md file.
Merge branch 'master' of https://github.com/ingenieroariel/webandgis
Merge branch 'master' of https://github.com/ingenieroariel/webandgis
Merge branch 'master' of https://github.com/ingenieroariel/webandgis
Merge branch 'master' of https://github.com/ingenieroariel/webandgis

Conflicts:
	README.md
	layers/models.py
Pulls GeoJSON data and renders an additional layer on the map.